Yes. There's the improved supercar pump that flows 250LPH here or walbro makes a 290/300LPH pump assembly. The cheapest I've seen it is from fuel-pumps.net. Also AEM makes a 320LPH pump, E85 version here. You might need upgraded wiring with the AEM 320.

 

Does that improved supercar pump just drop right in, no fooling around needed?

 

Yes, What he said ▲▲ My fuel system is return style but from my understading the fuel pump hat is the same as the 99 up Returnless style. These fuel pumps you mentioned above should be relatively plug and play??

 

Alright after doing a little more research I think I understand what the difference between the 98 and 99 gt's. For the mustangs previous to the 98gt They were a return style fuel system with a different style of pump hat. The 98gt/Cobra is also return style however they have a one-off fuel pump hat, similar looking to the 99+gt but with two fuel hoses at the top of the hat for an inlet and outlet fuel line. I've posted photos below of the 98gt fuel pump and and the 99+

98 Mustang Gt - Return Style

99+ Gt - Returnless Style

If anyone is interested on upgrading their 98gt fuel to a walbro 290/300lph the cheapest I could find them is on StreetSideauto.com . Here is the part# TU227HP

 

i have also read that the svt focus pump and aviator pumps were direct drop in pumps for the 98's. Anyone here running one?

 

If you plan on going forced induction I would go ahead and swap in a 97 and older tank and filler neck. It's plug and play. I ran a aviator pump in my 98 for a little while. It would suck he basket dry. So I drilled holes. Then it would starve for fuel around curves anywhere close to 1/4 tank. I got tired of all that and swapped a older tank. V6 or v8 doesn't matter. Then you have the voltage problem to deal with too. Under a certain rpm the voltage to the pump is like 7 volts I think. Then above that it goes up to actual voltage. Once you get rid of the bastard fuel system the 98 will be just like a 96 or 97. Have fun and feel free to ask me if you need help. I'm on my 3rd 98

 

The aviator was a direct replacement

 

So once you swap in a 94-97 tank do you keep the 98 pump or swap? ANything else needed to do the swap besides a tank and neck? I plan on going forced induction next winter. Going to get all of my fuel system upgrades done and be ready. Mainly stock motor for now so i know i need a set of 96-97 fuel rails and a adjustable pressure regulator and my injectors and MAF. Might consider doing this tank swap if it will make matters easier.

 

I pulled the tank with the pump and wiring harness. You have to repin the harness to match up to the 98 plug at the back of the tank by the bumper. I think I had to use the 97 return line. Just the short part that goes from the tank to the hard line above the rear end. Also the filler neck and fuel cap. Then you will buy a regular pump like the fox and 94-97 uses. I used a aeromotive stealth 340. It was good to 500hp. I kept the stock 98 rails and regulator and added 42lb injectors and a 05 and newer slot style maf with a vortech s trim converted to blow through. Then I went to a 70mm turbo all with the same fuel system

 

Here is the thread with some good info. http://forums.corral.net/forums/gt-sohc/1303948-98gt-fuel-pump-answer-once-all-2.html

 

thanks for the link! i havent had to mess with with a fuel pump or anything before. Replaced a leaky filler neck gasket on my old 95, so this will be my first time messing with a fuel system. So the way it sounds like i need to get the tank with the pump hat with plug for the pump and the line to the filter and the line for the return to tank and i should be good? 94-97 of 96-97 and i know you said it can be from a v6 or v8

 

94-97 the tank is simple. Just 3 bolts holding it up. Just run the car as close to e as possible so it's easier to drop.

 

Thanks! Hope to get it swapped this spring

 

Alot of you are forgetting about the (FPDCM) Fuel Pump Driver Control Module - It's whole purpose is to..... Control the voltage that actually gets Delivered to the fuel pump.